There are several Temporary
(Non-Immigrant) Visas, such as Professional (H1B or TN Visa), Business
Visitor (B-1 Visa), and Intra-company Transferee (L-1 Visa).
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The first step in obtaining an employment based immigrant visa is
through a labor certification application, unless if the alien is exempt from labor
certification under one of the exceptions.=> ....
There are two different methods in which
a person may become eligible to bypass both the job offer
requirement and the labor certification process.=>....
The priority date is
established at the date the Labor Certification is filed. For
categories that do not require labor certification, the priority
date is the date the Form I140 is received by the USCIS. =>
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